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经营范围
发明名称
Protective system for highway crossings
摘要
申请公布号
US3176126(A)
申请公布日期
1965.03.30
申请号
US19610082038
申请日期
1961.01.11
申请人
GENERAL SIGNAL CORPORATION
发明人
VINEALL EDWIN G.
分类号
B61L29/28
主分类号
B61L29/28
代理机构
代理人
主权项
地址
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